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Threat researchers reported separate malware campaigns that used fake or pirated software distribution channels to infect Windows users with credential theft and traffic-interception malware. In one campaign, attackers seeded cracked software sites with a trojanized WinX_DVD_Copy_Pro.exe that launched an obfuscated HTA through MSHTA, deployed an upgraded CountLoader v3.2, and ultimately delivered ACR Stealer entirely in memory. The loader established persistence with scheduled tasks, profiled infected hosts, authenticated to command-and-control with a JWT token, and supported additional payload delivery through ZIP, DLL, MSI, PowerShell, and removable-media propagation tasks.
A second campaign abused interest in DeepSeek-R1 by promoting a fake DeepSeek site through Google Ads and delivering a malicious installer, AI_Launcher_1.21.exe, backed by fake CAPTCHA pages, PowerShell, AES-decrypted payloads, and a domain-generation routine. The final malware, BrowserVenom, installed a rogue root certificate and reconfigured browsers to send traffic through the attacker-controlled proxy 141.105.130[.]106:37121, allowing interception and collection of user web activity. Researchers said the operations relied on impersonation-themed infrastructure and low-detection payloads to evade defenses, with BrowserVenom infections observed in Brazil, Cuba, Mexico, India, Nepal, South Africa, and Egypt.
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3 events from the most recent confirmed update back to the earliest known activity.
Howler Cell reported related malicious Python packages associated with the CountLoader activity had been seen since September 2025. The packages had zero antivirus detections at the time they were uploaded.
Kaspersky GReAT published research describing a malvertising campaign that abused DeepSeek-R1 branding to lure users to a fake DeepSeek website promoted through Google Ads. The report detailed delivery of the AI_Launcher_1.21.exe installer and the BrowserVenom implant that installed a rogue root certificate and forced browsers through a malicious proxy.
Howler Cell uncovered a malware campaign using cracked software distribution sites and a multistage infection chain to deploy CountLoader v3.2. In the observed activity, the loader ultimately delivered ACR Stealer via a trojanized WinX_DVD_Copy_Pro.exe unpacked entirely in memory.
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Multiple active malware campaigns are using **trojanized installers** and social engineering—rather than software vulnerabilities—to gain initial access and then deploy credential theft or remote-control capabilities. Intel 471 reported a new Android banking trojan dubbed **FvncBot** targeting Polish mobile banking users by impersonating an *mBank* “security” app; the dropper prompts installation of an additional “Play” component and then abuses **Android Accessibility Services** for persistence and control, enabling **keylogging**, **screen capture**, and hidden **VNC-style remote interaction** to facilitate fraudulent transactions. Separately, Cyderes described an ongoing, large-scale piracy-channel campaign where cracked game installers hide behind a legitimate-looking **Ren’Py** launcher tracked as **RenEngine**, which decrypts and launches subsequent stages and introduces **HijackLoader** via techniques including **DLL side-loading** and module stomping; observed final payloads include **ACR Stealer** (and in some cases **Vidar**) to exfiltrate browser credentials, cookies, and crypto wallet data. Cybereason detailed a different installer-themed operation in Chinese-speaking communities delivering **ValleyRat/Winos 4.0** attributed to **Silver Fox APT**, notable for using the rare **“PoolParty Variant 7”** process injection (abusing Windows I/O completion ports and `ZwSetIoCompletion()` after duplicating a handle from `Explorer.exe`) plus a strengthened watchdog mechanism via injection into `Explorer.exe` and `UserAccountBroker.exe` to maintain persistence.
Jun 29, 2026
Researchers reported a large-scale **malware distribution campaign** that used fake software offerings hosted on trusted platforms to infect users, with operators increasingly relying on **AI-assisted or “vibe-coded” development** to scale payload creation. McAfee identified more than **443 malicious ZIP archives** masquerading as AI tools, game cheats, VPNs, drivers, and decryptors, distributed via services including *Discord*, *SourceForge*, *FOSSHub*, *MediaFire*, and *mydofiles.com*. The campaign used **48 variants** of `WinUpdateHelper.dll` across **17 kill chains**, each with separate command-and-control infrastructure but linked through shared cryptocurrency wallet credentials, allowing researchers to trace monetization activity and victim distribution across countries including the US, UK, India, Brazil, France, Canada, and Australia. A separate but related report described another **multi-stage malware campaign** that also relied on deceptive delivery and evasion, using **.NET Ahead-of-Time (AOT) compilation** to hinder analysis and a host-scoring system to avoid sandboxes and low-value targets. In that intrusion chain, a phishing-delivered ZIP launched `KeyAuth.exe`, which fetched `bound_build.exe` and then deployed both the **Rhadamanthys infostealer** and an **XMRig** miner disguised as *MicrosoftEdgeUpdater*. The malware checked conditions such as RAM, uptime, document count, and active antivirus processes, and terminated itself if the environment scored below a threshold, showing a deliberate effort to evade detection while maximizing successful infections.
Jun 29, 2026
Security researchers reported two malware campaigns using fake or trojanized software downloads to install remote access trojans with credential theft and persistence features. eSentire identified a previously undocumented **STX RAT** after an attempted intrusion against a finance-sector organization, where a browser-downloaded VBScript launched a multi-stage loader chain using **XXTEA** and **Zlib** unpacking, anti-analysis checks, and several persistence methods. The malware supports **HVNC**, in-memory payload execution, tunneling, screenshots, security-tool inventory, and theft of browser credentials, cookies, Windows Vault data, FTP client secrets, and cryptocurrency wallets. Its command-and-control design uses **X25519 ECDH**, **Ed25519**, **HKDF-SHA256**, and **ChaCha20-Poly1305** over a custom TCP protocol, with infrastructure reachable over both the clear web and **Tor**. A separate investigation by Breakglass Intelligence found a fake software keygen packaged as a malicious WinRAR self-extracting archive that deployed the **Vjw0rm** JavaScript RAT through a four-layer dropper chain. The infection used nested SFX archives, a compiled AutoHotkey loader, parallel payload paths, and three persistence mechanisms, while abusing `upaste[.]me` as a dead-drop service and hiding the RAT as an XML file later renamed to JavaScript for execution. Researchers said the operator appeared to be a Turkish-speaking commodity cybercrime actor relying on reused tooling, deceptive file paths, and bundled legitimate Windows files to evade detection, underscoring how software cracks, keygens, and trojanized installers remain effective delivery vectors for RATs and infostealers.
Jun 29, 2026